John Jonston (in Polish, Jan Jonston; in Latin, Joannes Jonstonus; Szamotuly, 15 September 1603 – 1675, Legnica) was a Polish scholar and physician, descended from Scottish nobility and closely associated with the Polish magnate Leszczynski family.
Source: copper engraving with: Historiae naturalis de quadrupetibus libri cum aeneis figuris Johannes Jonstonus Med: Doctor, Francofurti ad Moenum: Impensis haeredum Math: Meriani, MDCL-MDCLIII [1650-1653]. License: CC-PD-Mark PD Old